1. Laboratory for Photonic and Fiber devices École Polytechnique Fédérale de Lausanne (EPFL) Lausanne 1015 Switzerland
2. Research Laboratory of Electronics Massachusetts Institute of Technology Cambridge MA 02139 USA
3. Bertarelli Foundation Chair in Neuroprosthetic Technology Laboratory for Soft Bioelectronic Interfaces Institute of Microengineering Institute of Bioengineering Centre for Neuroprosthetics Ecole Polytechnique Fédérale de Lausanne (EPFL) Geneva 1202 Switzerland